Rupture disk assembly

A rupture disk assembly to be sealed in a pressurized system, comprising:

• a rupture disk having a dome-shaped rupturable portion including a convex surface and a corresponding concave surface forming a dome area, the rupturable portion having a score line creating a line of weakness along which the rupturable portion will tear when the rupturable portion of the rupture disk is exposed to a fluid above a predetermined pressure;
• and
• a safety member disposed adjacent the concave surface of the rupture disk, the safety member including a flange and a hinge, the hinge having a knuckle extending downwardly into the dome area and extending laterally across the dome area to an outer edge comprising three segments, wherein at least two of the segments are substantially linear, each of the segments are joined at an angle relative to the adjoining segment, and at least one of the segments is positioned inside the area circumscribed by the score line, the hinge further including a tongue extending from the knuckle and into the outlet bore in a direction generally perpendicular to the flange of the safety member.

A rupture disk assembly to be sealed in a pressurized system, comprising:

• a rupture disk having a dome-shaped rupturable portion including a convex surface and a corresponding concave surface forming a dome area, the rupturable portion including a score line having a first and a second end, the score line creating a line of weakness along which the rupturable portion will tear when the rupturable portion of the rupture disk is exposed to a fluid above a predetermined pressure;
• and
• a safety member disposed adjacent the concave surface of the rupture disk and including a flange and a hinge, the hinge having a knuckle extending downwardly into the dome area and extending laterally across the dome area to a point that is inside the area circumscribed by the score line or inside an arc connecting the two ends of the score line, the hinge further including a first pocket adjacent to the first end of the score line and a second pocket adjacent to the second end of the score line, the first and second pockets configured to contact the area of the rupturable portion adjacent the respective ends of the score line when the rupture disk ruptures.

A rupture disk assembly to be sealed between an inlet support member having an inlet bore and an outlet support member having an outlet bore, comprising:

• a rupture disk having a dome-shaped rupturable portion including a convex surface and a corresponding concave surface forming a dome area and line of weakness having a first and a second end, the rupture disk tearing along the line of weakness when the rupture disk is exposed to a fluid above a predetermined pressure;
• and
• a safety member disposed adjacent the concave surface of the rupture disk, the safety member including a flange and a hinge, the hinge having a knuckle extending downwardly into the dome area and extending laterally across the dome area to an outer edge comprising three segments, wherein at least two of the segments are substantially linear, each of the segments are joined at an angle relative to the adjoining segment, and at least one of the segments is positioned inside the area circumscribed by the line of weakness or inside the area circumscribed by an arc connecting the two ends of the line of weakness, the hinge further including a tongue extending away from the knuckle and into the outlet bore.

A rupture disk assembly to be sealed between an inlet support member having an inlet bore and an outlet support member having an outlet bore, comprising:

• a rupture disk having a dome-shaped rupturable portion including a convex surface and a corresponding concave surface forming a dome area, the rupturable portion having a score line having a first and second end, the score line creating a line of weakness along which the rupturable portion will tear when the rupturable portion of the rupture disk is exposed to a fluid above a predetermined pressure;
• and
• a safety member disposed adjacent the concave surface of the rupture disk, the safety member including a flange and a hinge, the hinge having a knuckle extending downwardly into the dome area and extending laterally across the dome area to an outer edge comprising three segments, wherein at least two of the segments are substantially linear, each of the segments are joined at an angle relative to the adjoining segment, and at least one of the segments is positioned inside, but directly adjacent to, the area circumscribed by the score line or the area circumscribed by an arc connecting the two ends of the score line, the hinge further including a tongue extending away from the knuckle and into the outlet bore in a direction generally perpendicular to the flange of the safety member.

A rupture disk assembly to be sealed between an outlet support member having an outlet bore and a pressurized system, comprising:

• a rupture disk having a dome-shaped rupturable portion including a convex surface and a corresponding concave surface forming a dome area, the rupturable portion having a score line having a first and second end, the score line creating a line of weakness along which the rupturable portion will tear when the rupturable portion of the rupture disk is exposed to a fluid above a predetermined pressure;
• and
• a safety member disposed adjacent the concave surface of the rupture disk, the safety member including a flange and a hinge, the hinge having a knuckle extending downwardly into the dome area and extending laterally across the dome area and a tongue extending away from the knuckle and into the outlet bore in a direction generally perpendicular to the flange of the safety member, the hinge further including a tongue support projecting from the tongue to a point adjacent the outlet support member.

A rupture disk assembly to be sealed in a pressurized system, comprising:

• a rupture disk having a dome-shaped rupturable portion including a convex surface and a corresponding concave surface forming a dome area, the rupturable portion having an indentation formed at the apex of the dome shape, the rupture disk further including a score line with a first and a second end, the score line creating a line of weakness along which the material of the rupture disk will tear when the rupture disk is exposed to a fluid above a predetermined pressure;
• and
• a safety member disposed adjacent the concave surface of the rupture disk, the safety member including a flange and a hinge, the hinge having a knuckle extending downwardly into the dome area and extending laterally across the dome area to an outer edge comprising three segments, wherein at least two of the segments are substantially linear, each of the segments are joined at an angle relative to the adjoining segment, and at least one of the segments is positioned inside the area circumscribed by the score line or inside the area circumscribed by an arc connecting the two ends of the score line, the hinge further including a tongue extending from the knuckle and into the outlet bore in a direction generally perpendicular to the flange of the safety member.